For us, right after. Take a normal toddler, inject them with chemicals and neurotoxins and step back. It's quite the "science experiment" the FDA placed on OUR child. I am furious about it too when they KNEW what it could cause! (we have done our share of reading up on the Autism spectrum).

Now we have a beautiful daughter who's not going to be normal for the rest of her life due to what the FDA says is "acceptable and harmless"